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<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        .over,.out{
            background-color: #66d3ff;
            width:400px;
            float:left;
            padding: 10px 10px;
        }
        .enter,.leave{
            background-color: #66d3ff;
            width:400px;
            float:left;
            margin-left:30px;
            padding: 10px 10px;
        }
        h2{
            background-color: #fff;
            padding: 5px 5px;
        }
        .clear {
            clear: both;
        }
        .e-mt50 {
            margin-top: 50px;
        }
    </style>
</head>
<body>
    
<div id="contanier"></div>
<script src="//rs.jss.com.cn/libs/script/jquery/jquery-1.12.1.min.js"></script>
</body>
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